Active transport

The video tutorial explains how particles typically move down a concentration gradient, from high to low concentration. It introduces active transport, a process that moves particles against this gradient, from low to high concentration, using energy and specialized carrier molecules. The tutorial highlights how plants utilize active transport to absorb nutrients from the soil, specifically through root hair cells.

What is the direction of particle movement in active transport compared to normal diffusion?

• From low to high concentration

• Randomly in all directions

• From high to low concentration

• In a circular motion

Which molecules are responsible for actively pumping particles across the membrane?

• Enzymes

• Carrier molecules

• Lipids

• Proteins

What is required for active transport to occur?

• Energy

• Oxygen

• Water

• Carbon dioxide

How do plants utilize active transport?

• To absorb sunlight

• To release oxygen

• To take up nutrients from the soil

• To produce energy

Which plant cells are involved in nutrient uptake through active transport?

• Leaf cells

• Stem cells

• Root hair cells

• Flower cells